Data / Federal rules / 2024-07412

Clean Water Act Methods Update Rule for the Analysis of Effluent

The Environmental Protection Agency published this final rule in the Federal Register on April 16, 2024. It took effect on June 17, 2024.

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What the agency says

The U.S. Environmental Protection Agency (EPA) is finalizing changes to its test procedures required to be used by industries and municipalities when analyzing the chemical, physical, and biological properties of wastewater and other samples for reporting under the EPA's National Pollutant Discharge Elimination System permit program. The Clean Water Act requires the EPA to promulgate these test procedures (analytical methods) for analysis of pollutants. The EPA anticipates that these changes will provide increased flexibility for the regulated community in meeting monitoring requirements while improving data quality. In addition, this update to the CWA methods will incorporate technological advances in analytical technology and make a series of minor changes and corrections to existing approved methods. As such, the EPA expects that these changes will not result in any negative economic impacts.

Key facts

Document number: 2024-07412
Type: Final rule
Action: Final rule
Agency: Environmental Protection Agency
Published: April 16, 2024
Takes effect: June 17, 2024
Dates: This final rule is effective on June 17, 2024. The incorporation by reference of certain material listed in this rule and is approved by the Director of the Federal Register as of June 17, 2024.
Docket: EPA-HQ-OW-2022-0901; FRL 9346-02-OW
Regulation ID (RIN): 2040-AG25
Code of Federal Regulations: 40 CFR 136
Topics: Environmental protection; Incorporation by reference; Reporting and recordkeeping requirements; Water pollution control
Pages: 40

The document on federalregister.gov PDF

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Everything from the Environmental Protection Agency · Rules on environmental protection · Rules on incorporation by reference · Rules on reporting and recordkeeping requirements · Published in April 2024

Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.